Insulated Ice Compartment Using Freezer Air Duct Cooling
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Solution Overview
Problem
Bottom mount refrigerators lack an efficient and practical ice dispensing system within the fresh food compartment due to temperature and structural challenges, as the freezer door is too low, making it difficult to transport ice and maintain the necessary cold temperatures for effective icemaking.
Innovation Solution
An insulated icemaking compartment is integrated within the fresh food compartment, utilizing a cold air duct from the freezer compartment, with a separate temperature control system to maintain temperatures between 0° and 32° F, and an ice dispenser in the door, allowing for ice access without opening the refrigerator door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an icemaker is placed in the freezer compartment of a bottom mount refrigerator, then ice can be made and stored, but the freezer door is too low making it difficult to transport ice to the refrigerator compartment and precluding a dispenser in the refrigerator compartment door
Solution Approach 1:
The refrigerator is divided into functionally independent compartments: a freezer compartment for cold storage and an icemaking compartment within the refrigerator compartment for ice production and dispensing. This segmentation allows the icemaker to be positioned where it can serve the refrigerator compartment directly, eliminating the need to transport ice from the freezer door's low position.
Solution Approach 2:
A dedicated icemaking compartment acts as an intermediary between the freezer's cold air supply and the refrigerator compartment's dispensing needs. This intermediate space receives cold air from the freezer via a duct, maintains temperatures suitable for icemaking (0-32°F), and provides direct access to the refrigerator compartment door for dispensing.
2Ease of operation
If an icemaking compartment is integrated within the fresh food compartment, then ice can be made and dispensed from the refrigerator compartment, but the compartment requires insulation, seals, appropriate airflow, and a control system to maintain temperatures between 0° and 32° F
Solution Approach 1:
The icemaking compartment utilizes the existing refrigerator cooling system's airflow and temperature control mechanisms to maintain its specialized temperature range (0-32°F). The compartment shares the refrigerator's power source, control system architecture, and airflow pathways, allowing it to perform icemaking functions without requiring a completely separate temperature control system.
Solution Approach 2:
The icemaking compartment is designed to be self-regulating within the refrigerator's existing temperature control framework. By positioning it within the refrigerator compartment and providing cold air supply from the freezer, the system allows the compartment to automatically maintain appropriate temperatures for icemaking through the existing thermal dynamics and control loops.
3Ease of operation
If the icemaking compartment is located within the fresh food compartment, then ice can be dispensed without opening the refrigerator door, but the fresh food compartment temperature (normally about 40° F) is warmer than the temperature needed for effective icemaking (less than 32° F)
Solution Approach 1:
Cold air is extracted from the freezer compartment and delivered specifically to the icemaking compartment through a dedicated cold air duct. This extraction provides the icemaking compartment with the lower temperatures (0-32°F) needed for effective ice production, independent of the warmer fresh food compartment environment (normally 40°F).
Solution Approach 2:
The icemaking compartment creates a localized cold zone within the warmer refrigerator compartment. By providing dedicated cold air supply from the freezer and insulating the compartment, a specific region with temperature 0-32°F is established, allowing icemaking to occur in this localized area while the rest of the fresh food compartment maintains its normal 40°F temperature for food storage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables efficient icemaking and dispensing of ice within the fresh food compartment of bottom mount refrigerators, improving convenience, energy efficiency, and safety while maintaining optimal temperature control and reducing complexity.
Implementation Method 1
utilizing a cold air duct from the freezer compartment
Implementation Method 2
An insulated icemaking compartment is integrated within the fresh food compartment
Data Source
AI summary
A refrigerator includes a refrigerator cabinet, a fresh food compartment disposed within the cabinet, a freezer compartment disposed within the cabinet, an ice compartment disposed within the cabinet, and an electronic control system associated with the refrigerator and adapted to monitor and control the fresh food compartment, the freezer compartment and the ice compartment. The control system provides for energy efficient control and operation through various means, including adjusting cut-in and cut-out temperatures of the cooling system to control.